Which companies does Air China Southwest Branch belong to? At which airport?

Air China Southwest Branch is an important branch of Air China in China. It is an air transport enterprise that was born under the new situation of civil aviation reform and reorganization in China, mainly operating domestic routes and fully supporting the international transport network. Air China Southwest Branch is headquartered in Shuangliu International Airport in Chengdu, Sichuan, while its subordinate Guizhou Branch is located in Longdongbao Airport in Guiyang and Tibet Branch is located in Gongga Airport in Lhasa.